<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">thumb wheels</topic></authority><related type="broader"><topic>lighting device components</topic></related><variant type="other"><topic>thumb screws</topic></variant><variant type="other"><topic>thumb wheel</topic></variant><variant type="other"><topic>thumbscrews</topic></variant><variant type="other"><topic>thumbwheels</topic></variant><variant type="other"><topic>wheels, thumb</topic></variant> <note xml:lang="en"><![CDATA[ Disc-shaped wheels on lighting device burners at the outer end of a shaft by means of which the shaft and its wick wheel or wheels can be turned manually; in some burners a simple loop of the shaft replaces the wheel. ]]></note></mads>